NA 041
DIN Standards Committee Heating and Ventilation Technology and their Safety
Technical rule
[CURRENT]
VDI 4645
VDI 4645
Heating systems with heat pumps in single and multi-family houses - Planning, construction, operation
Title (German)
Heizungsanlagen mit Wärmepumpen in Ein- und Mehrfamilienhäusern - Planung, Errichtung, Betrieb